#deletefileaction {
    width: 160px;
    height: 90px;
    position: absolute;
    left: 50%;
    top: 50%;
    z-index: 1;
    box-shadow: 0 0 10px #a6c7ff;
    transition: background-color 0.5s;
    text-align: center;
    vertical-align: 50%;
}
#current_group {
    line-height: 2em;
    margin-top: 40px;
}
#sidebar {
    text-align: center;
}
#groupStorage, #personalStorage {
    margin-left: 400px;
}
#editionManagement, #sharedFile {
    border-bottom: 3px solid #e6e6e6;
}